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(No Model.) S. BBRGMANN.

GALVANIG BATTERY.

Patented Nov. 20, 1883.

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UNITED STATES SIGMUND BERGMANN, OF NEW YORK, N. Y., ASSIGNOR TO BERGMANN St CO., OF SAME PLACE. y

BATTERY.

ASPECIFICATION' forming part of Letters Patent No. 288,916, dated November 2.0, 1883.

Application iiled April 1], 1883. (No model.)

To @ZZ whom 1125 may concern:

Be it known that I, SIGMUND BERGMANN, ofthe city of New York, in the county and State of New York, have invented a certain new and useful Improvement in Galvanic-Batteries, of which the following is a specification.

The object I have in View is to produce a compact and portable galvanic battery, and one that will be simple and cheap in construction, the invention relating to the peculiar means for sealing the battery-jar water-tight, while permitting such gas as may be generated to escape.

In the accompanying drawings, forming a part hereof, Figure 1 is a vertical section of the battery; and Fig. 2, a sectional View of the electrodes of the battery, showing a different arrangement, thereof. The electrodes, however, form no part of the present invention.

The two electrodes B C may be of any suitable character, or have any desired arrangement. Rising from them are the large conductors b b, to which the small connecting-- wires e e are secured. D D are insulatingpieces; d, porous material. Eis the liquid of the battery, and a a are holes in the outer electrode.

rI'he inclosingjar A is of glass, and is preferably cylindrical. It has a cylindrical neck formed with an external screw-thread molded directly thereon. With this screw-thread engages a clamping-ring, H, of metal, provided with an inwardly-turned flange at its upper edge, which engages the cover and draws it downwardly. Upon the top of the jar, and

closing the same, is placed a iieirible rubber diaphragm, F, which extends across the top of the jar, and is solid, except where the conductors b hpa-ss therethrough. Holes smaller than such conductors are cut in the flexible diaphragm, and the diaphragm is stretched over the conductors, closing water-tight upon them. The gas generated in the battery acting upon the iiexible diaphragm bulges .the same outwardly around the conductors b b, and forms openings by the stretching of the diaphragm, through which the gas escapes; but these openings close immediately upon the reduction ofthe pressure within the jar.

Upon the flexible diaphragm F is placed a glass lid, G, having apertures through which the conductors b b pass, which apertures may have stopples c c, of cork or other insulating f material, surrounding the conductors b b; but the lid G may be dispensed with, and the ring H clamp directly upon the flexible diaphragm F.

That I claim is- I. In a galvanic battery, the jar having screw-neck, in combination with the flexible diaphragm, through which the electrode-conductors pass, and the screw clamping-ring, substantially as set forth.

2. In a galvanic battery, the combination 'of the jar A with the flexible diaphragm F, through which the electrode-conductors b b pass, the lid G, and clamping-ring H, substantially as set forth.

This specification signed and witnessedthis 6th day of April, 1883.

SIGMUN D BERGMANN.

TWitnesses:

H. W. SEELY, E. H. PYATT. 

